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Table of Contents
XtOpenApplication, XtVaOpenApplication
- initialize, open, or close a display
- Widget XtOpenApplication(XtAppContext
*app_context_return, String
- application_class, XrmOptionDescRec *options,
Cardinal num_options, int *argc_in_out, String *argv_in_out, String *fallback_resources,
WidgetClass widget_class, ArgList args, Cardinal num_args);
- Widget XtVaOpenApplication(XtAppContext
*app_context_return, String
- application_class, XrmOptionDescRec *options,
Cardinal num_options, int *argc_in_out, String *argv_in_out, String *fallback_resources,
WidgetClass widget_class, ...);
- app_context_return
- Specifies the
application context.
- application_class
- Specifies the class name of this application,
which usually is the generic name for all instances of this application.
- options
- Specifies how to parse the command line for any application-specific
resources. The options argument is passed as a parameter to XrmParseCommand.
For further information, see Xlib - C Language X Interface.
- num_options
- Specifies
the number of entries in the options list.
- argc_in_out
- Specifies a pointer
to the number of command line parameters.
- argv_in_out
- Specifies the command
line parameters.
- fallback_resources
- Specifies resource values to be used
if the application class resource file cannot be opened or read, or NULL.
- widget_class
- Specifies the widget class of the shell to be created.
- args
- Specifies
the argument list to override any other resource specification for the
created shell widget.
- num_args
- Specifies the number of entries in the argument
list. ...
- Specifies the variable argument list to override any other resource
specification for the created shell widget.
The XtOpenApplication
function calls XtToolkitInitialize followed by XtCreateApplicationContext,
then calls XtOpenDisplay with display_string NULL and application_name
NULL, and finally calls XtAppCreateShell with application_name NULL,
the specified widget_class, and the specified args and num_args and returns
the created shell. The modified argc and argv returned by XtDisplayInitialize
are returned in argc_in_out and argv_in_out. If app_context_return is
not NULL, the created application context is also returned. If the display
specified by the command line cannot be opened, an error message is issued
and XtOpenApplication terminates the application. If fallback_resources
is non-NULL, XtAppSetFallbackResources is called with the value prior
to calling XtOpenDisplay.
XtAppInitialize and XtVaAppInitialize have been
superceded by XtOpenApplication and XtVaOpenApplication respectively.
XtAppInitialize(3Xt)
, XtVaAppInitialize(3Xt)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
Table of Contents
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